2. According to the second and third paragraphs，what is true of graphene?

　　A It can be used to make paper.

　　B It is possible to see it with our naked eye.

　　C It is easy to find graphene.

　　D It is possibly the thickest material in the world.

　　3. Which of the following can be used to replace the word “apply”in paragraph 4?

　　A request.

　　B polish.

　　C use.

　　D put.

　　4. Which of the following is NOT meant in the last two paragraphs?

　　A Graphene is made of graphite，one of the softest materials in the world.

　　B Graphite is made of layers of graphene，the thinnest material in the world.

　　C When we get to the thinnest possible layer of graphite，we find graphene.

　　D With a pencil，a sheet of paper and a piece of adhesive tape，we can find graphene.

　　5. Graphenes superstrength lies in the fact that

　　A It is the thinnest material in the world.

　　B It is made of the most abundant elements in the world.

　　C It can help to make electronic components smaller.

　　D It helps engineers to produce more sensitive electronic products.

　　答案與題解：

　　1. C 第一段最后一句提供了答案：工程師將眼光投向石墨烯，一種由碳原子組成的超薄材料，

　　這種材料能夠改變電子產(chǎn)品的未來。

　　2.C 第二段倒數(shù)第二句告訴我們，25，000 層石墨烯才能堆砌成一張普通白紙的厚度，這是為了說明石墨烯是多么的薄，而不是說它可以用來造紙，所以A不是正確答案。第三段最后一句說明石墨烯就在我們周圍，因此C是答案。B和D的表述內(nèi)容都與該兩段內(nèi)容不符合。

　　3.D apply... over：將……涂（敷）在……上。

　　4.A 最后兩段告訴我們，用一張紙，一支鉛筆和一片膠帶就能找到石墨烯；無數(shù)層石墨烯構(gòu)成石墨，當鉛筆留在紙上的石墨被膠帶剝離到最薄一層時，我們就得到了石墨烯。因此只有A不是最后兩段的表述內(nèi)容。

　　5. C 第一段提供了答案。隨著電子產(chǎn)品越來越小，需要更小的電子組件（components) ，而石墨烯作為最薄的材料可以幫助工程師實現(xiàn)這一目標。這就是石墨烯力量所在。